PART II. CHAPTER XV. 



183 



Fossils of the White Chalk. 



FOSSILS OF THE WHITE CHALK, 

 Fig. 144. 



Catillus Cuvieri. (Syn. Inoccramus Cuvieri, Sow.) 



Fig. 147. 



Plagiostoma spinosum. 



Fig. 148. Fig. 149. 



Terebratula Ostrea carinata, 



Defrancii. also in Upper Green-sand. 



Fig. 151. 



octoplicata, Terebratula pumilus. carnca. 



{Var. of T. plicatilis.) {Magas pumilus, Sow.) 



